Inner sole and method of making the same



Dec. 18, 1928. v 1,695,408

H. A. BALLARD I NNER SOLE AND METHOD OF MAKING THE SAME Qriginal FiledMarch 17. 1921 Patented Dec. 18, 1928.

UNITED STATES HARRIE A. BALLARD, OF BEVERLY, MASSACHUSETTS, ASSIGNOR, BYMESNE ASSIGN- MENIS, TO INTERNATIONAL SHOE COMPANY, OF ST. LOUIS,MISSOURI, A CORPORA- TION OF DELAWARE.

INNER SOLE-AND METHOD OF MAKING THE SAME.

Application filed March 17, 1921, Serial 110.452,!546. Renewed October25, 1928.

This invention relates to a shoe inner sole for welt shoes, moreparticularly of that type wherein a reinforcing strip of fabric isemployed, and relates specifically to the formation of a circumferentialrib through the root of which the inseam passes. The inner sole ischanneled in the opposite directions about the margin of the fore partand the shank of the sole blank, the lips bent into contact one over theother and compacted together to form a rib of the desired contour, andthe reinforcement is then applied.

For a more complete understanding of this invention reference may be hadto the ac- 1 companying drawings illustrating one embodiment thereof, inwhich-- Figure 1 is a plan view of an inner sole blank channeled inpreparation for the for mation of the rib.

Figure 2 is a similar View showing the lips turned into overlappingcontact and compacted. I

Figure 3 is a similar view showing the reinforcing fabric in position onthe inner sole in preparation for the final rib reinforcing operations.

Figure a is a plan view of the finished inner sole, and

Figures 5, 6, 7 and 8 are part fragmentary sections through the marginof the sole and rib corresponding respectively to Figures 1 to 4,inclusive.

Referring to Figures 1 and 5 the inner sole A is channeled from bothdirections around the margin of the shank and fore part to form a pairof oppositely 'directedchannel lips 1 and 2, the inner channel li 2being trimmed away at 3 where it is of su stantial thickness. Lip 2 isthen turned upwardly at an acute angle and pressed outwardly, the lowerface and free edge being molded into the same plane andforming the lowerpart of the inner. rib face. The lip 1 is turned back wardly down overlip 2 so that its edge forms a continuation of the lower inner face ofthe lip 2.

In Figure 6 is shown in dotted lines a pair of die members i and 5shaped to form these lips as described, and by pressure to compact thesame to a substantial rib. The reinforcing fabric 6, coated with anadhesive, is then placed in position, as shown in Figures 3 and c,engaging the face of the inner sole within the rib and projecting overthe rib. The fabric is then shaped to conform closely to the ribsurfaces and the surplus material trimmed away to form the completedinner sole shown in Figures4 and 8. It should be noted that thisprocedure forms a rib having a substantially fiat outwardly anddownwardly inclined inner. face and a convex outer face. The inner faceis thus formed to properly guide the channel-guide of the sewlng machineand insurethat the inseam is properly positioned, while thecurved outerface allows the presence of sufficient material to reinforce the rib toprevent anypossibility of its being bent or distorted in such a way asto affect the stitching mechanism. It should also be noted that thisprocess produces a rib composed of a pair of channel lips which it isunnecessary to cement together prior to the reinforcing, thuseliminating the necessity of performing this additional operation.Moreover neither lip is bent back through an angle of more than 90degrees at its root, so that it is not unduly stretched or strained andthe betweensubstance is not torn. The strength of the parts, therefore,is not impaired by the forming operations, as might result if the lipswere bent further.

Having thus described one embodiment of this invention, it should beevident that vari ous changes and modifications might be made thereinwithout departing from its spirit or scope as defined by the appendedclaims.

I I claim: I i

1. The method of making an inner sole which comprises channeling a soleblank in opposite directions about its margin, compacting one of thechannel lips so formed, and bending the other thereover to form a rib ofthe desired contour.

2. The method of making an inner sole which comprises channeling a soleblank in opposite directions about its margin, compacting the inner lipand bending the outer form an outer convex face and a downwardly andoutwardly substantially flat inclined innor face. V

5. An inner sole having a rib composed of a pair of channel lipscompacted together in overlapping relation into the desired contour, anda reinforcing material shaped to conform to the inner and outer facesthereof.

6. An inner sole having a rib of-material compacted to form a downwardlyand outwardly directed substantially flat inner face and a convex outerface.

7. An inner sole having a rib formed of oppositely extending channellips, the side and rections about its margin to form a pair of 20oppositely directed channel lips, the inner of said lips being compactedand the outer of said lips being folded over said compacted inner lip.

In testimony whereof I have afiixed my 25 signature.

HARRIE A. BALLARD.

